George a



(No Model.)

G. A. SLAYTON. PRIGTION CLUTCH.

Patented Aug. '9. 1887.

W.. 6M... j fw@ ya UNITED STATES PATENT OFFICE..

GEOEGE A. SLAYTON, or GUYAEOGA FALLS, OHIO, Assie'non rro THE FALLS mvEr COMPANY, or SAME PLAGE.

FRlCTiONeCLUTCH.I

SPECIHCATIN forming part of Letters Parent No. 367.856, dated August 9, 1887.

Application filed June 9, 1887. Serial No. 240,698. (No model.) y

To ctZZ whom it may concern:

Be it known that l, GEORGE A. SLAYTON, of Cuyahoga Falls, State of Ohio, haveinvented a new and usefulImprovement in Friction-Clutchcs, of which thefollowing is aspccifrcation. f

My invention is designed as an improvement on the clutch shown in Letters Patent No. 308,87 2, December 9, 18S-1t, to W. D. Brock, whereby the operation of the same is improved and the two jawsrare made adjustable rela- "which are mounted upon slides f g.

Figure l represents a longitudinal section through the center of a pulley and clutch mechanism containing my invention. Fig. 2 is a side view of the pulley and clutch mechanism.

a is a shaft. b is a pulley, which revolves freely on the shaft between the collars c and c'. d is an arm secured toA the shaft and extending radially therefrom. e is a flange mounted upon the pulley,and which is gripped by the jaws of the clutch.A j" and g are respectively the clutchjaws, which vare faced with wood or any Similaisuitable material, -and These slides are provided with guideways in any suitable manner upon the opposite faces of the arm d, so that the slides f g may slide freely to and from the center ofthe shaft. The parts are so arranged that the liange e comes be ltween the jaws f and g.

h is a lever, which is pivoted to the arm d, and which -is provided at each extremity with set-screws t and j. At 7c it is pivoted to the slide g.

Z is a projecting 'piece cast on the slide f', upon which the end of the Set-screw t rests.

The end of the set-screw j rests upon a camshaped projectiomm, which constitutes the short arm of the lever a. This lever n is pivoted to the armd ata', and the extremity of its long arm is pivoted to the link 0. The

other end of this link o is pivoted to a slidingv collar, p, which is connected with a suitable shifter.

, In the arrangement shown in the drawings the jaws of the clutch have released the liange of the pulley; but by forcing the collar p to ward the collar c the long arm of the lever a will be thrown upward, causing 'the cam projeetion m to raise the arm of the lever 71,which rests upon it, through the set-screw j. This movement carries the slide g upward until the jaw g presses against the inside of the dange e. The same movement causes the setserew t', Operating upon the projection l, to

carry the slide f downward until the jawf presses upon the exterior of the flange e.

, By having the adjustment between thelever h and one or both of the slides carrying the jaws a great advantage is attained,in that the ence to the other, so that under the action of the lever r, .each jaw will grip the flange simultaneously and with thesame pressure. Thus, with the arrangement shown in the drawings, if it should be found that the inside jaw engages the flange before the outside jaw, it is only necessary to 'tighten the setserew t', whereas to remedy the opposite difficulty itis only necessary to loosen the setscrew. This set-screw fi might be arranged in the connection between the slide g and the lever h, instead of in its present position. The amount of motion of both of the jaws under the action of the cam projecton'm may be regulated by the adjustment of the set-screw j.

I have described only one arm d, withits connected clutch mechanism; but it is obvious that two or more of the 'same lmay be employed in connection with the same pulley.

What hl claim as my invention, and desire to secure by Letters Patent, is

The combination, with a shaft and a loose pulley adapted to run freely on said shaft, of a clutch rigidly secured to said shaft, having two inversely-moving radial jaws adapted to engage one upon the periphery and the other against the interior of the pulley-flange, said jaws being connected by lever h, which is op erated from a shifter through the lever a, and a set-screw, i, being interposed in the connection between the lever h and one of said jaws, whereby said jaws may be adjusted relatively to each other, substantiall y as described.

, GEORGE A. SLAYTON.

Witnesses:

Tnos. F. WALSH, E. L. BABGOGK.

s position of each jaw may be adjusted in refer- 

